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Try not to worry to much, My frog will sometimes just seem to float at the top of the tank, and I look over and freak out, then I remember that he does it all the time. Pretty much do as they say and watch him. Also, try feeding the frogs some tubeflex worms, mine loves them. Also the betta can get in on that to!

That is why I said 'normal'. Current ripping through the tank is not good, but that is not the 'normal' tank. If the water falls and inch or so, that is fine. I don't think it is normal for the water to fall four inches. Avoid extreams and you will be fine with your frogs.

My frogs do okay with the current from my HOBs on my 55-granted, the water only drops about a finger width, but all the same they spend most of their time on the bottom of the tank. They do the 'moment of zen' thing where they stretch out their limbs all the time, you get used to it after a while. I have a pretty heavily planted tank and I do see them on occasion resting on a large leaf or stem as opposed to the bottom.

"Never Underestimate the Power of Stupid People in Large Numbers"
-55 Planted Community: Cardinal Tetras, Harlequin Rasboras, Cherry Barbs, a large mixed school of Bronze, Agassiz, and Panda cories, BN Plecos, Various inverts, African Dwarf Water Frogs, and a mated pair of Kribs
-10 Growout tank: Currently home to some cory fry, snails, and red cherry shrimp

Thank you all sooooooo very much. I am feeling much better. Can't say enough about the wonderful info (not to mention your extreme patience) I've rec'd here. Hopefully I've learned enough that my frogs will live a long happy life!

That is why I said 'normal'. Current ripping through the tank is not good, but that is not the 'normal' tank. If the water falls and inch or so, that is fine. I don't think it is normal for the water to fall four inches. Avoid extreams and you will be fine with your frogs.

That is why I said unlike most care sheets tell you to do which is not fill to the top because of escape worries, you should fill closer to the top if your using an HOB otherwise it is rough on the frog. See we agree after all
Personally I won't use an HOB on a frog tank at all just for that reason